Fossils from the Triassic Period are extremely rare and often only tiny fragments are found. The river sediment deposits of the Otter Sandstone Formation provided the best conditions at the time and they have yielded some exceptional finds, like that of the Rynchosaur, otherwise known as the Beaked Lizard, examples of which can be found in Exeter Museum.
Rynchosaurs were herbivorous reptiles that grazed on the wetlands and lush vegetation growing alongside the Triassic desert rivers.